ant-user mailing list archives

Is there any way to implement more complex conditionals rather than a single
property value? For example, I need to check multiple dependencies before
compiling. I was wondering if there was a way to set a target's if/unless
to be
<target name="compile" if="(property_A && property_B) || property_C">
Also in the <available> task, is it possible to check for entire packages
rather than a specific classname?
Michael Stanley